Dental device



July 23, 1946.

H. BARISHMAN DENTAL DEVICE Filed June 14, 1944 'INVENTOR f/mr B/IEISl/MA/V Patented July 23, 1946 U NI TED STATES PAT EN T F F'IC-E.

DENTAL DEVICE Harry Barishmalii, New Yorlgll. Y. Application June 14, 1944, Serial No. 5119,1219

This invention relates generally to denta1 devices. More particularly my invention is concerned with an improved construction for the type of devices used for aiding dentists in marking teeth inthe mouth for the purpose of grinding or for other desired reasons.

One of the objects of my invention is to provide a novel marking device of the class described which shall he so constructed and arranged as to shall represent a general improvement in the art.

Other objects of my invention "willhereinafter be pointed out or will become evident from the following description.

In the accompanying drawing,

Fig. 1 is a plan view of a dental device constructed and arranged in accordance with my invention and having certain portions thereof broken away to disclose the construction thereof;

2 is an end elevational view thereof;

.L 3 is a diagrammatic View showing the manner of application and use of my invention; and

Fig. is an end elevational view, similar to Fig. 2, but illustrating a modified form of my invention.

In certain types of dental work, such as, for example, the making of crowns or inlays, it is necessary to grind the occlusal surface of the tooth which is to receive the same to provide space for the crown. It is also desirable that the layer of enamel to be removed for this purpose should be uniform. To accomplish this it has heretofore been the practice to employ a few layers of carbon paper of the type shown and described in the patent to F. W. Keith, No. 1,458,062, dated June 5, 1923. These sheets of carbon paper were held by the dentist with his fingers or with a tool while the patient closed his mouth, biting on the carbon paper to leave an imprint or mark on the tooth to be ground which served also as a guage for the dentist in grinding. Usually this imprinting had to be repeated a number of times before the job was finished, necessitating the interruption of the grinding because the dentist was obliged to reinthe carbon paper a number of times. Several disadvantages were noted in the above described method and procedure which the present invention is designed to overcome. One such disad- 4 Claims. (01. 282-19) 2 vantage was in the fac-tthat when the patient bit on the carbon paper it wastusually cut through" by the biting and mutilated, thus often giving inaccurate marking. Another disadvantage was found in the fact that the dentist lost time by constantly reintroducing the carbon paper into the mouth of the patient to get the necessary markings. g

Referring now in detail to the drawing, I have shown, my improved dental device in the form of a strips comprising *a layer of textile material l I havingone of its'surfaces-I I'a coated with adhesive substance and the opposite surface IIb coated with a layer of carbon or the like material capable of leaving amarkor imprint when brought into frictional contact with anothersurface. While the saidstrip'II may be madeof a single layer of textile or other suitable material having its opposite'surfaces coated, "as just described,-it is understood that a laminated structure mayal'so be employed in which the layer I I may 'form the 'central -layerand in which the coatings I la and I Ib may be on separate strips of material I I0. and Ill), as shown in Fig. 4 of the drawing.

In Fig. 3 I have illustrated a method of use of the dental device of my invention. Assuming that it is desired to construct a crown for the tooth A in the upper jaw, it would be necessary to grind a uniform layer of enamel from the occlusal surface of the tooth A in order to allow for the added thickness of the material of the crown.

To properly guage the amount and extent of such grinding I out off from the continuous strip 8, shown in Fig. 1, a piece 25, of any desired size and place the same over the tooth B in the lower jaw, corresponding to the tooth A, with the adhesive surface 2 Ed downwardly so that it will adhere and be retained in position with the carbon surface I lb uppermost. When the patient closes his jaws, an imprint from the carbon surface i II) will be left on the tooth A which will serve as a guide to the dentist for grinding. This may be repeated as many times as needed, without interrupting the grinding. While I have described the strip I l as being of textile material because of the fact that it will not become torn or mutilated after the first imprint is made, it is understood that I do not limit myself to textile material because Cellophane, plastic, or other suitable material may be satisfactorily employed.

In order to protect the adhesive surface Ha. until ready for use, I provide a layer [1 overlying the said surface I Id. The layer I1 is preferably of a textile material having an open weave, on the nature of cheese cloth which may be adhesively held in place and which may be removable for effective use of my dental device, in the customary manner known to the art in the manufacture of adhesive tape.

In order to facilitate the ready removal of the layer I! it is preferably made wider than the strip H so that it will cover the adhesive surface of the said strip H and at the time overhang one longitudinal edge thereof.

Interposed between the layer l1 and the adhesive surface Ha, of the strip I l for a relatively short distance from the longitudinal edge of the said strip H from which the layer [1 over hangs is an auxiliary relatively narrower layer 19. This layer I9 is adhesively held by the said adhesive surface Ha, and overhangs the said longitudinal edge of the strip ll similarly to the layer l1. It is thus seen that a portion Ha of the layer I 1 which overlies the layer l 9 is free and unattached to the adhesive surface Ha.

Therefore, when it is desired to use my dental device it is merely necessary for the dentist to grasp the overhanging portion of the layer I 9 between the fingers of one hand and with the fingers of the other hand to grasp the overhanging portion of the layer I1. By maintaining a grip on the layer IS the layer I! may be readily peeled off without contacting the carbon surface llb.

a While in the drawing I have shown my dental device made in the form of a continuous strip which may be manufactured and sold as a roll, my device may also be made and sold in the form of cut sheets of predetermined size.

It will be thus be seen that there is provided a device in which the objects of my invention are achieved, and which is well adapted to meet the conditions of practical use.

As various possible embodiments might be made of the above invention, and as various changes might be made in the embodiments said sheet being coated with adhesive substance capable of removably adhering to a tooth to be retained thereby and a removable layer of material adhesively overlying the said adhesive surface to protect the same until ready for use.

2. As a new article of manufacture, a dental device of the class described, comprising a sheet of material, one surface thereof being coated with carbon or'similarsubst'ance capable of leaving an imprint when brought into frictional contact with another surface, the opposite surface of said sheet being coated with adhesive substance capable of adhering to a tooth to be removably retained thereby, a first removable layer overlying the said adhesive surface to protect the same, and a second removable layer interposed between said adhesive surface and said first removable layer, said second removable layer being narrower than said first removable layer. 1

3. A dental device according to claim 2 in' which the said first and second removable layers are of open weave fabric.

4. A dental device according to claim 2 in which the said first and second removable layers have portions thereof extending beyond an edge of said sheet so that they may be grasped by the fingers of the hands and readily removed without contactively engaging the said carbon surface.

HARRY BARISI-IMAN 

